A limited-time collaboration between TV anime Mr. Osomatsu and lava-grilled steak chain Yappari Steak is now running at participating locations nationwide through June 30, 2026 (Tuesday). The campaign marks the 10th anniversary of the beloved anime series featuring six sextuplet brothers.
The collaboration launched on May 18, 2026 (Monday) and features 16 original food and drink menu items inspired by the six brothers' distinct personalities, along with exclusive drawn-down illustration merchandise available at full-collab locations.
Exclusive "Drawn-Down Illustration" Collab Uniforms
For this campaign, the six sextuplets have been reimagined as Yappari Steak staff members wearing a special collaboration uniform based on the chain's actual uniform. These drawn-down illustrations appear on exclusive goods sold at full-collab locations, including clear cards and flake stickers.
Full-collab locations also feature special interior decorations to immerse visitors in the collab's world.
16-Item Original Collab Menu
The collaboration menu features 16 food and drink items, each designed to reflect the personality of a specific sextuplet character. Yappari Steak's signature service — unlimited rice, soup, and salad — pairs with the menu's playful concept of imagining the neet brothers eating to their hearts' content.
Customers who order a collab menu item receive a limited-edition clear coaster as a bonus novelty (while supplies last).
A special birthday limited clear coaster was also distributed on May 24, 2026, celebrating the sextuplets' birthday. (Distribution has since ended.)
Exclusive Collab Goods at Full-Collab Locations
A range of original merchandise using the exclusive drawn-down illustrations is available for purchase at full-collab locations only. A limited-edition postcard novelty is included with every ¥2,000 spent on goods (while supplies last).
Available items include:
- Clear Cards: 6 types (trading items)
- Flake Stickers: 1 type (open product)
Goods purchases are limited to dine-in customers only (cashless payment required). See the official campaign site for details.
Full-Collab and Light-Collab Locations
The campaign operates in two tiers:
Full-Collab Locations (May 18 – June 30, 2026): all menu items, limited goods, and special decorations
- Tokyo: Yappari Steak Kanda / Yappari Steak Kamata
- Osaka: Yappari Steak Abeno Walk
- Fukuoka: Yappari Steak Yahata Honjo
- Okinawa: Yappari Steak 4th Kokusai-dori
Light-Collab Locations (June 6 – June 30, 2026): selected collab menu items at all other Yappari Steak locations nationwide
Note: The drink menu at full-collab locations is split into two phases (Phase 1: May 18 – June 5; Phase 2: June 6 – June 30).
For light-collab location details, check the Yappari Steak official X: https://x.com/yapparisteak
Event Overview
Period: May 18, 2026 (Monday) – June 30, 2026 (Tuesday)
Special Campaign Site: https://yapparigroup.jp/campaign_202605/
About TV Anime Mr. Osomatsu
Originally created as a 2015 project commemorating the 80th birth anniversary of Fujio Akatsuka, Mr. Osomatsu is an anime adaptation of Akatsuka's classic gag manga "Osomatsu-kun," reimagining the sextuplets as adults. Though they're past 20 years old and still jobless, broke, and socially stunted, the brothers' unpredictable daily lives captured Japan's hearts — and they've since become the most famous sextuplets in the country.
This year marks the 10th anniversary of the series. A live-action film, Mr. Osomatsu: The Human Trash-ification Plan!!!!!?, is currently in theaters from June 2026.
Official site: https://osomatsusan.com/
©Fujio Akatsuka / Mr. Osomatsu Production Committee
About Yappari Steak
Yappari Steak is an Okinawan steak chain expanding under the concept "From Okinawa to the World." Operating approximately 20 locations both domestically and abroad, the chain delivers Okinawa's steak culture worldwide.
The chain's defining commitment is "hand-crafted quality" — every cut of meat is hand-processed on-site by skilled meat artisans. The signature "Yappari Steak" uses a rare ミスジ cut (only about 5 kg per head), which is carefully trimmed by hand to maximize both tenderness and the natural umami flavor of the beef.
Official site: https://yapparigroup.jp/
